442 PROCEEDINGS OF THE ACADEMY OF [April, 



age ; internal border arcuate, strongly so basally ; apex blunt rectangu- 

 late; external margin very slightly curved, almost straight; basal lobe 

 low, but separated by a distinct notch; transverse plicae weak, sepa- 

 rated; internal ridge narrow, rather inconspicuous; interauricular 

 membrane moderately high with a rounded median emargination ; 

 tragus lanceolate, greatest width not more than a third of the length, 

 apex attenuate, internal margin moderately arcuate at the base, 

 external margin with a pair of slight accessory lobes at the base. Eye 

 of medium size. Nose-leaf blunt lanceolate, higher than the width of 

 the pad ; nostrils crescentic ; nose-pad with the margins free to a greater 

 or less extent. Lower jaw with the pad triangular and of medium size, 

 divided more or less distinctly. 



Limbs. — Forearm moderately robust, slightly l^owed ; thumb long 

 and slender. Posterior limbs slender and weak, the feet narrower 

 and with the toes strongly compressed. Tail slender, exceeding the 

 apical margin of the interfemoral membrane by the length of one or 

 one and a half vertelDrte. 



Membranes and F?fr.— Membranes thin and rather weak; propa- 

 tagium deep proximally, very narrow distally, but with the margin 

 free to the thumb; uropatagium large, apical margin sul^truncate; 

 endopatagium with the nerves extending parallel to the humerus and 

 femur; mcsopatagium with the nerves with a general antero-posterior 

 trend. Fur thick and long, rather silky in texture, uniform in distri- 

 bution except on the interauricular region of the head, which is par- 

 tially bare; ear with the posterior and internal bases as well as the 

 anterior margin very distinctly haired, the anterior margin with the 

 hair long and scattered. 



Color. — Upper surface ranging from pale drab to mars l^rown, the 

 basal two-thirds of the fur white, which shows through distinctly at 

 the nape and on the crown, at which latter point the ])rown tips are 

 almost absent in some specimens. Under surface ranging from ecru 

 drab to broccoli brown, the hair white basally and with silvery tips, 

 the latter being more marked in some individuals than in others. Hair 

 at base and on the margin of the ears whitish. Membranes and muzzle 

 appendages Front's brown. 



Skull. — Slender, elongate, rostrum produced and moderately acumi- 

 nate. Brain-case slightly compressed, evenly arched; sagittal crest 

 low and weak; interorbital constriction distinct, not or very slightly 

 vader than the width of the rostrum at the canines; zygomata with 

 the greatest width posterior, not arched. Rostrum at the orbits twice 

 as wide as at the canines, gently acuminate and passing into the brain- 



